On Bisq, usually you'll have several days to settle a trade, precisely because bank transfers may not be instant. Doesn't mean that the seller will accept such a payment method. Plus, that's the opposite of non-KYC.
My favorite method is Amazon gift cards. But again, you have no guarantee that you'll find an offer accepting them.
That said, because nowadays you can use your AUS Amazon account to buy on ANY Amazon shop, you can buy gift cards valid in any country and currency... Which opens up your options greatly.
In my experience, EUR offers are many times more numerous than any other currency, including USD.